Combined steam-pressure gage and draft-regulator



v(No Model.)

, 1v1. WILKBS. t COMBINED STEAM PRESSURE GAGE AND DRAFT REGULATOR.

INVENTOR (3y Patented Sept. 18, 1888.

y UNITED STATESY PATENT Ori-IceQ MOSES VILKES, OF TRENTON, JERSEY.

COMBINED STEAM-PRESSURE GAGE AND DRAFT-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 389,730, dated September'l, 1888. Application tiled December 22, 1887. Serial No. 258693. (No model.)

To @ZZ whom t may concern:

Be it known that I, MosEs WILKEs, a citizen of the United States, residing at Trenton,

,ISA

tion'.

Mercer county, New Jersey, have invented new and useful Improvements in a Combined Steam-Pressure Gage and Draft-Regulator, of which the following is a specification.

This invention relates to certain new and useful improvements in a combined steam-press ure gage and draft-regulator; and it consists, substantially, in such features of construction, arrangement,and combinations of parts, as will hereinafter be more particularly described.

The invention has for its object to provide a combined steam-pressure gage and draftregulator for steam-boilers, which shall possess all theadvantages of' simplicity of construction and cheapness of cost, and one also that shall effectually regulate the draft by which togovern the steam-pressure and at the same time measure or indicate the pressure of steam in the boiler; and the invention has such other objects in View as will hereinafterl more fully appear when taken in connection with the accompanying drawings, wherein- Figure l represents a verticalsectional elevation of a combined steam-pressure gage and draft-regulator embodying lny invention; and Fig. 2 is a side elevation thereof, partly in sec- Fig. 3 isa horizontal sectional view taken-on the line a; ac of Fig. l. Y

In carrying my invention into effect I employ a suitable bed-plate having to one side thereof a vertical portion or wall, and to each side of this plate is inserted a post between and by which is supported at the top a cross head or plate. Inserted in the bed-plate, about centrally of the posts, is a hollow stationary tube open at its upper end and communicating at its lower end with the steam-pipe leading from the boiler, and surrounding such stationary tube is a vertically-moving tube closed at its top by a screw-cap, having pro- `jecting upwardly therefrom a stem, around which is coiled aspring exerting a pressure between the cross head or plate and the screwcap sufficient to maintain the outer verticallymoving tube normally downward, the said spring acting also to allow an upward movenient of the tube by pressure of steam entering from the boiler. Surrounding the said outer tube, at or near its lower end, is a collar having a spindle carrying a roller that works in a slot in the side wall of the base-plate, by which the said tube is guided evenly and friction overcome, and projecting from or attached to said'collar is an index finger that moves over a scale secured to the base-plate, by which the'pressure of the steam is always measured or indicated. The spindle -of the collar also carries another roll that moves in the slot of a pivoted arm or lever fulcrumed to the ver` tical side portion of the bed-plate, and which pivoted arm or lever is provided with a series of perforations or openings, by which such varying connections to the damper or valve-rod may be effected as that such damper or valve may be perfectly regulated, so as to maintain such uniformity of draft and consequent pressure of steam as may be desired in operation.

Reference being had' to the several parts by the letters marked thereon, A represents the bedplate,having to one side thereof a vertical portion, B, formedv with a vertical slot or opening, C, (shown in dotted lines, Fig. 1,) and secured to the bed-plate,at each side thereof, is a post, D, supporting between them at the top a cross-head or plate, E. Fitted in an opening, a, in the bed-plate, about centrally of the posts, is a stationary hollow tube, F, open at the top and communicating at its bottom in the manner shown with the steam-pipe G; and surrounding this said vertical stationary tube is a vertically-moving tube, H, that is closed at its top by ascrew-cap, L-having projecting upwardly therefrom a stern, K, around which is coiled a spring,` L, exerting a pressure between saidscreW-cap I and the crosshead or plate E, so as to normally maintain the vertically-moving tube down upon the bedplate. Secured to the bed-plate, alongside of the tubes, is a gage, L', having thereon ascale indicating the pounds7 pressure of steam entering the tubes from the boiler and surrounding the vertically-moving tube is a close-tting collar having fitted thereto an index-finger, M, that moves over said scale, thus indicating the pressure. This close-fitting collar N is also provided or formed with aspindle, b, carrying a small roller, c, that tits and works IOO within the slot C of the vertical side wall, B, ofthe bed-plate A, thus acting to evenly guide the said tube as well as to reduce friction.

Secured to the side portion, B, of the bedplate by means of a bolt, d, is a movable lever, O, bent in the manner shown, and having in its shorter arm an elongated opening or slot, c, and in its longer arm a series of perforations or openings, f, by which attachment or connection may be had with the valve or damper rod in such varying manner as to allow ofthe valve or damper to be perfectly controlled in proportion to the pounds7 pressure of steam acting to actuate said arm orlever through the movement of the movable outer tube. In the said slot e of this movable arm or lever O a small roller, g, works, which roller is carried by the spindle b of the collar N in like man ner as the roller c; and it is evident that as the vertically-moving tube rises against the press ure of the springL the said pivoted arm or lever O will be turned on its fulcrum, and thereby operate the valve or damper to which it is connected in any ordinary well-known manner.

From the foregoing description it will be seen that the vertically-moving tube is nor mally held down upon the bed'plate by the tension of spring L, and that as soon as the pressure to which the device has been set is Overcome the pivoted arm or lever will be operated,in an obvious manner, to regulate the damper or valve with which it is supposed to be in connection. It will further be seen that by reason of the collar N moving with the tube the index-finger M thereof, by moving over the scale on the gage, will always indicate or measure the pressure.

It will be observed that the movable lever O is slightly bent, and that the position of its fulcrum is such as to bring it to an angle with the vertically-moving tube, which form and arrangement are necessary in order to obtain a movement of the valve corresponding to the movement of the sleeve.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-u 1. In a combined steam-pressuregage and draft-regulator, the combination, with a stationary tube secured to a suitable bed-plate, of a vertically-moving tube surrounding the same, having a screwcap formed or provided with a stem, a spring tending to maintain said tube in a downward position, and a pivoted arm or lever actuated by said movable tube to close or regulate a damper or valve, the same being slightly bent and at an angle to the tubes, substantially as described.

2. In a combined steam-pressure gage and draftregulator, the combination, with a stationary tube open at its top and communicating at its bottom with the boiler, and a vertically'movingtube surrounding thesame,closed at its top and maintained downwardly by a spring, of a collar surrounding said movable tube, at or near its bottom, and provided with an index-finger and a gage over which Said index-finger moves, substantially as described.

3. In a combined steam-pressure gage and draft-regulator, the combination,with the bedplate A, having to one side thereof a vertical portion, B, formed with the slot or elongated opening U, of the inner stationary tube fitted to said bed-plate, the outer movable tube provided with the screw-cap, from which projects a stem surrounded by a spring, the arm or lever pivoted to said side portion and provided with slot e, and the collar N, fitted to tliemovable tube and carrying the rollersg and c, mov ing in the slots ofthe side portions, B, and the said movable lever, substantially as described.

4. In a combined steanrpressure gage and draft-regulator, the combination, with the inner stationary tube and theouter movable tube normally held downward by a spring, of the gage L and the collar N, fitted to said movable tube and formed or provided with an index-nger, substantially as described.

5. In a combined steam-pressure gage and draft-regulator, the combination,with the bedplate having the side portion formed with a vertical slot or opening, ot' the inner stationary tube, the outer movable tube normally held downward by a spring, and the collar N, having a spindle provided with a roller working in the slot of said side portion, substantially as described.

6. In a combined steam-pressure gage and draft-regulator, the combination,withthebed plate having slotted side portion and the ver. tically-mova-ble tube, of the movable arm or lever pivoted to said side portion, and the collar fitted to said movable tube and provided with a roller working in the slot of said pivoted arm or lever, substantially as shown, in the manner described.

In testimony whereofI have hereunto set my hand in the presence of two subscribing witnesses.

MOSES XVILKES. -Witnesses:

PETER W ruins, .Lures H. HAMMOND.

IOO 

